摘要
通过溶胶-凝胶法制备了SiO2-TiO2二元材料和聚甲基丙烯酸丁酯(PBMA)/(SiO2-TiO2)杂化材料,并进行了结构表征。结果表明,TiO2组分以非晶态的形式分散到非晶态的SiO2凝胶骨架中,形成稳定的、化学均一的SiO2-TiO2二元材料。RAMAN、XRD和FESEM测试结果均显示,SiO2-TiO2二元无机相具有纳米尺寸(粒径在15 nm左右),硅烷偶联剂的引入使得PBMA/(SiO2-TiO2)杂化材料均匀性较好,与纯PBMA体系的热稳定性相比,PBMA分子链断裂的Tmax由纯PBMA的(258±3)℃增加到杂化材料的(271±3)℃,证明有机相与无机相之间存在相互作用,从而使该杂化材料的热稳定性有所提高。
Silica-titania binaries and poly（ butyl methacrylate）/silica-titania hybrid materials were synthesized via the sol-gel method. The structures of both the materials were characterized, respectively. It was found that amorphous TiO2 was dispersed in the network of SiO2, forming a stable and chemical homogeneous silicatitania binary material. The results of RAMAN, XRD and FESEM all indicate that the diameters of the particles of silica-titania inorganic phase are around 15 nm（ nano level）. Poly（ butyl methacrylate）/silica-titania hybrid material is continuous and homogeneous with the introduction of a silane coupling agent. Thermogravimetric analysis showed that compared with that of pure PBMA, Tmax of the hybrid material has shifted obviously from （258 ＋3） ℃ to （271 ＋3） ℃, indicating that the connection of the organic molecules with the inorganic network by chemical bonds can improve the heat resistance of the hybrid material.
出处
《应用化学》
CAS
CSCD
北大核心
2005年第9期984-988,共5页
Chinese Journal of Applied Chemistry
基金
中山大学青年教师科研启动基金(01-31120-1130019)
广东省科学基金研究团队项目(039184)资助项目
